| Memorial Hospital | Belleville, IL | Acute Care Hospitals | 5 stars |
| Memorial Hospital | Carthage, IL | Critical Access Hospitals | 4 stars |
| Memorial Hospital | Aurora, NE | Critical Access Hospitals | Not rated |
| Memorial Hospital | Stilwell, OK | Acute Care Hospitals | 4 stars |
| Memorial Hospital and Health Care Center | Jasper, IN | Acute Care Hospitals | 4 stars |
| Memorial Hospital los Banos | Los Banos, CA | Acute Care Hospitals | 3 stars |
| Memorial Hospital of Carbondale | Carbondale, IL | Acute Care Hospitals | 1 star |
| Memorial Hospital of South Bend | South Bend, IN | Acute Care Hospitals | 2 stars |
| Memorial Hospital, the | North Conway, NH | Critical Access Hospitals | 4 stars |
| Memorial Medical Center | Modesto, CA | Acute Care Hospitals | 3 stars |
| Memorial Medical Center | Springfield, IL | Acute Care Hospitals | 3 stars |
| Memorial Mission Hospital and Asheville Surgery Ce | Asheville, NC | Acute Care Hospitals | 3 stars |
| Memorial Satilla Health | Waycross, GA | Acute Care Hospitals | 3 stars |
| Memorialcare Saddleback Medical Center | Laguna Hills, CA | Acute Care Hospitals | 4 stars |
| Mental Health Emergency Center, Inc | Milwaukee, WI | Psychiatric | Not rated |
| Mercy Allen Hospital | Oberlin, OH | Critical Access Hospitals | 5 stars |
| Mercy Catholic Medical Center- Mercy Fitzgerald | Darby, PA | Acute Care Hospitals | 2 stars |
| Mercy General Hospital | Sacramento, CA | Acute Care Hospitals | 3 stars |
| Mercy Harvard Hospital | Harvard, IL | Critical Access Hospitals | Not rated |
| Mercy Health - Fairfield Hospital | Fairfield, OH | Acute Care Hospitals | 3 stars |
| Mercy Health - Urbana Hospital | Urbana, OH | Critical Access Hospitals | 4 stars |
| Mercy Health - West Hospital | Cincinnati, OH | Acute Care Hospitals | 4 stars |
| Mercy Health - Willard Hospital | Willard, OH | Critical Access Hospitals | Not rated |
| Mercy Health Kings Mills Hospital LLC | Mason, OH | Acute Care Hospitals | Not rated |
| Mercy Health Lakeshore Campus | Shelby, MI | Critical Access Hospitals | Not rated |
| Mercy Health St Ritas Medical Center | Lima, OH | Acute Care Hospitals | 4 stars |
| Mercy Health System Corp | Janesville, WI | Acute Care Hospitals | 3 stars |
| Mercy Health-Anderson Hospital | Cincinnati, OH | Acute Care Hospitals | 4 stars |
| Mercy Hospital | Coon Rapids, MN | Acute Care Hospitals | 3 stars |
| Mercy Hospital Ada | Ada, OK | Acute Care Hospitals | 4 stars |
| Mercy Hospital Berryville | Berryville, AR | Critical Access Hospitals | Not rated |
| Mercy Hospital Booneville | Booneville, AR | Critical Access Hospitals | 4 stars |
| Mercy Hospital Carthage | Carthage, MO | Critical Access Hospitals | 4 stars |
| Mercy Hospital Fort Smith | Fort Smith, AR | Acute Care Hospitals | 3 stars |
| Mercy Hospital Healdton, Inc. | Healdton, OK | Critical Access Hospitals | Not rated |
| Mercy Hospital Jefferson | Crystal City, MO | Acute Care Hospitals | 4 stars |
| Mercy Hospital Kingfisher, Inc | Kingfisher, OK | Critical Access Hospitals | Not rated |
| Mercy Hospital Logan County | Guthrie, OK | Critical Access Hospitals | Not rated |
| Mercy Hospital Northwest Arkansas | Rogers, AR | Acute Care Hospitals | 5 stars |
| Mercy Hospital of Buffalo | Buffalo, NY | Acute Care Hospitals | 2 stars |
| Mercy Hospital of Folsom | Folsom, CA | Acute Care Hospitals | 4 stars |
| Mercy Hospital Ozark | Ozark, AR | Critical Access Hospitals | Not rated |
| Mercy Hospital Paris | Paris, AR | Critical Access Hospitals | 5 stars |
| Mercy Hospital Perry | Perryville, MO | Critical Access Hospitals | 2 stars |
| Mercy Hospital South | Saint Louis, MO | Acute Care Hospitals | 2 stars |
| Mercy Hospital Southeast | Cape Girardeau, MO | Acute Care Hospitals | 2 stars |
| Mercy Hospital Springfield | Springfield, MO | Acute Care Hospitals | 3 stars |
| Mercy Hospital St Louis | Saint Louis, MO | Acute Care Hospitals | 4 stars |
| Mercy Hospital Stoddard | Dexter, MO | Acute Care Hospitals | 2 stars |
| Mercy Hospital Waldron | Waldron, AR | Critical Access Hospitals | Not rated |